Are you running into a specific (like "Telephone activation is no longer supported") during this process? confirmation id for installation - Microsoft Q&A
The Installation ID to Confirmation ID process feels clunky, but it is the most reliable way to activate a stubborn copy of Office when the internet fails. Keep your IID safe, call the official number, and treat the CID like gold—it is the key to your software. microsoft office installation id to confirmation id
The Installation ID is a 63-digit code (grouped into 9 sets of 7 digits) generated by your computer based on your hardware and product key. Open any Office application (e.g., Word or Excel). Navigate to File > Account > Activate Product . Are you running into a specific (like "Telephone